Siemens SINUMERIK 828D Function Manual page 52

A2: Various NC/PLC interface signals and functions
1.2 NC/PLC interface signals
DB31, ... DBX21.5 (Motor selection done)
The PLC user program sends this signal to the drive to indicate successful motor selection. For example, in the
case of star/delta switchover on the SIMODRIVE 611D or 611U, a message or signal must be provided when the
motor contactor has switched. The pulses are then enabled by the drive.
DB31, ... DBX21.6 (integrator disable, n-controller)
The PLC user program inhibits the integrator of the speed controller for the drive. The speed controller is thus
switched from PI to P controller.
Note
If the speed controller integrator disable is activated, compensations might take place in certain applications (e.g.
if the integrator was already holding a load while stationary).
Feedback via the interface signal:
DB31, ... DBX93.6 = 1 (integrator n-controller disabled)
DB31, ... DBX21.7 (pulse enable)
The pulse enable for the drive module is only requested if all enable signals (hardware and software) are
pending:
• Trigger equipment enable
• Controller and pulse enable
• Pulse enable (safe operating stop)
• Stored hardware input
• Setpoint enable
• "Ready to run state"
- No drive alarm (DClink1 error)
- DC link connected
- Ramp-up completed
See also:
DB31, ... DBX93.7 (pulses enabled)
52
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
Basic Functions